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Mathematics ECAT Pre Engineering Chapter 17 Functions and Limits Online Test MCQs With Answers
Question # 1
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Question # 2
A function from X to X is denoted as
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f : X to Y
f : Y to Y
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Question # 3
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1
0
-2
3
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Question # 4
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2
0
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Question # 5
The function discontinuous at x = 0 is (1) tan x (II) cot x (III) sec x (iv)cosec x)
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I & III
I & IV
II & IV
II & III
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Question # 6
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quadratic function
constant function
trigonometric function
linear function
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Question # 7
If the domain of the function f: x⟶ 2x
3
+ 1 is {-1,2,3}, the range of the function is
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{3,2,5}
{1,3,9}
{-1,-2,-3}
{3,9,19}
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Question # 8
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quadratic function
constant function
linear function
exponential function
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Question # 9
If a variable y dependents on a variable x in such a way that each value of x determines exactly one value of y, then we say that
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x is function of y
y is a function of x
y is independent variable
x is real valued function
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Question # 10
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Question # 11
If x is an image of y under the function f. This can be written as
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y = f(x)
f(x) = 0
x = f(y)
f(y) =0
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Question # 12
f(x) = sin x + cos
2
x is
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trigonometric function
algebraic function
exponential function
logarithmic function
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Question # 13
sin h x = ___________
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Question # 14
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Question # 15
If f (x) = 2x+1 then fof (x) = _______;
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4x+3
2x +3
4x +1
None of these
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Question # 16
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[0,1[
[0, 1]
]0, 1[
None of these
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Question # 17
f (x) = | x | is a/an
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Injective function
Bijective function
Surjective function
Implicit function
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Question # 18
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0
1
-1
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Question # 19
If f(x) = x
3
- 2x
2
+ 4x -1 then f(2) is
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7
-16
16
-9
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Question # 20
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(1,7/3)
(1, 7/5)
(1, 11/7)
(1, 3/5)
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Question # 21
The set of points {(x,y)|y = f(x),∀x∈} is called
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Relation
Graph of f
Function
All are correct
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Question # 22
f(x) = x is
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trigonometric function
exponential function
quadratic function
identify function
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Question # 23
f(x) = x3-x/x2+1 is :
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an even function
an odd function
an even and implicit function
neither even nor a odd
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Question # 24
f(x) = x
3
is:
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an odd function
an even function
an implicit function
a quadratic funtion
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Question # 25
Inverse of the function y-10x is
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y=logx
y=lnx
x=10y
x=10y
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Question # 26
A function from A to B is denoted by
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f: A→ B
f: B → A
f: → A :B
f → A→ B
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Question # 27
The only function which is both even and odd is
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f(x) =α
f(x) = x
f(x) =0
Both A & B
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Question # 28
If y=f(x) is a function then y is called
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dependent variable
independent variable
constant
none of these
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Question # 29
If f(x) = x
2
then f(0) is
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0
1
2
none of these
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Question # 30
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R/[0,4]
R/(0,4)
(0,4)
[0,4]
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Question # 31
f(x) = 3x/x
2
+ 1 is:
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an even function
an odd function
an even and implicit function
neither even nor a odd
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